I'm tired of playing around with the wheat lamps used to backlight the front panel and would
like to convert to LED. I don't care snot about retaining the dimming feature. Any one done
this?


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wrote:
I'm tired of playing around with the wheat lamps used to backlight the front panel and would
like to convert to LED. I don't care snot about retaining the dimming feature. Any one done
this?


What's the problem you're having with the existing setup?

"Ken Layton" wrote in message
ps.com...

wrote:
I'm tired of playing around with the wheat lamps used to backlight the
front panel and would
like to convert to LED. I don't care snot about retaining the dimming
feature. Any one done
this?'''


What's the problem you're having with the existing setup?


Being totally unfamiliar with this particular scanner - he "might" have a
power supply issue of sorts. I had a radio come in the shop once with bulbs
that kept blowing out - a previous tech did nothing other than replace the
blown bulbs - three times - without trying to corrrect the issue. I placed a
resistor in line and no more blown bulbs. The surge when turning the set
on - apparently was more than the bulbs wanted to see - even though the
readings from the power supply were "as spec'd". The set worked flawlessly
otherwise and since. THAT set was the only one I had seen of that model that
had that issue. I had known many who had the same model with no issues.

That could be a simple repair - without having to do any real mods.........

Just my 2 cents

L.

I posted a repair for erratic/completely out backlight display several
months ago on alt.radio.scanner for this model.

One of the display lamp driver transistors was bad and I posted an
improved replacement for it.

The problem is the little bulbs burn out too often and are next to impossible to obtain locally. And Now that
apparently weak transistor has blown as well. LED's seem a far better option.



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I bought my 8500 brand new and is on constantly for hours at a time
every day. Never had any burned out lights. Just the driver transistor
had gone bad.